The trigger is set too light. It appears that as the trigger breaks in it gets smoother/lighter. Adjust the trigger tension screw. The one in front of the trigger not the one you have to pull the action out of the stock to adjust. I believe turning it out increases poundage. Can't remember off the top of my head and the book doesn't say. I had my "new" 527 trigger set at 6 oz. After a couple of range session it started not always wanting to set. I increased it to 12 oz then back down to 6 and it now sets every time. When it wasn't setting all the time it would break as soon as I put the scale on it so I have no idea how light it actually dropped to.